On 8/29/22 08:30, Manikanta Pubbisetty wrote:
On 8/26/2022 2:31 AM, Mark Herbert wrote:
The changes that I have posted will not work on other targets like
WCN6855 as is. It requires additional changes and therefore lots of
testing.
Will the changes be possible for QCA6390 as well? Currently this
chip only activates power saving mode when it is connected, but
behaves badly when not associated to any network. So there is a
chance that this kind of solution will help.
Not associated to any network as in Wi-Fi is ON and not connected or
Wi-Fi is off?
Manikanta
The way it works now.
I boot my laptop (it is Dell XPS 13 9310). If the network is available
and QCA6390 associates with it - the CPU package goes for PC10 state
for about 70% of time on idle. Even if I disconnect now it will be still
good.
But if I boot my laptop and never connect (associate to any WiFi ) - the
CPU will never reach below PC3 with WiFi on. If I disable WiFi - it
reaches PC10, if enable back - again PC3.
The point is QCA6390 need to be associated to network after boot (or
hibernation resume) before it activates powersave mode. If this very
first associatiion is not happening - it will eat battery as mad.
For now I've workarounded it by setting a systemd timer service to check
if the WiFi is not associated for f 3 minutes and if it is not - switch
wifi off.
But it is very strange why this first association is mandatory, because
if this forst association after boot happened - QCA6390 behaves
perfectly with WiFi on but not asociated. And continue to work perfectly
until hardware restart (reboot or hibernate resume) - then again first
association is needed. I was thinking that it is happening because the
ath11k_mac_vif_setup_ps is called only after the association so I've
tested the patch to call it earlier, and still no luck.
